🛡️ CVE-2026-62432 on Alpine — xen

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

The EVTCHNOP_expand_array hypercall checks for whether FIFO event

channels are enabled, but without holding the correct lock. It can race

with EVTCHNOP_reset, resulting in dereferencing a NULL pointer.

Distribution advisory

This page covers CVE-2026-62432 as tracked by Alpine, for the package xen. The fix is available in version 4.21.2-r0; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability low.

Affected software

ALPINE-CVE-2026-62432 is recorded against 1 package.

  • xen (fixed in 4.21.2-r0)

Timeline and source

Published on 28 July 2026 and last revised on 11 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

security.alpinelinux.org (Advisory)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-07-28
Updated 2026-08-12
Modified 2026-08-11
Fix URL N/A

Affected Packages

Software From version Fixed in
xen — 4.21.2-r0

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ALPINE-CVE-2026-62432 is rated CVSS 7.3 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.

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